great circle initial course
great circle initial course
大圆初始航向
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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A simulation calculation was made by the Simpson numerical integral, and the simulated results of the initial course and route distance were compared with those based on the great circle route.
用辛普森自适应算法进行了仿真计算，并与大圆航线的计算结果进行了比较。
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